The 20-year old Brazilian will join the French giants from Sao Paulo in January and will arrive with great expectations after comparing himself to the Argentine great.
"In my opinion, my style is similar to Messi," Moura told France Football.
"We get the ball and we attack immediately. We receive blows but we go on. He doesn't fall, he doesn't dive. I am just the same - I hardly complain.
"It is for all those reasons that I like Messi a lot and I can recognise myself in him. Actually, it is like a mirror image of me."